200 tesla (localized) by stretching graphene

Point out news stories, on the net or in mainstream media, related to polywell fusion.

Moderators: tonybarry, MSimon

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

200 tesla (localized) by stretching graphene

Postby DeltaV » Wed Dec 09, 2015 11:30 pm

Giving Graphene a Good Stretch


Programmable Extreme Pseudomagnetic Fields in Graphene by a Uniaxial Stretch


So, if you folded it in the middle, wrapping it a half turn around a nonconducting nanocylinder (with a large enough diameter to keep the two parallel graphene halves from interfering), then pulled on both ends of the cylinder in one direction and the two graphene ends in the opposite direction, the B vectors normal to the graphene would combine, instead of canceling in the far field. Then, form a macroscopic array of many of these units, all aligned in one direction.
Attachments
Stretched_Graphene_Pseudomagnetism.jpg
Stretched_Graphene_Pseudomagnetism.jpg (96.14 KiB) Viewed 5701 times

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Thu Dec 10, 2015 4:51 am

It is not a Magnetic Field, is a Pseudo-Magnetic Field.

It means that the electron clouds of the atoms of the material subjected to the strain process will behave AS IF it was immersed in a strong magnetic field.
Physically speaking, the stretching action in the Graphene changes the LANDAU quantization levels of the material thus increasing it's electron density (and hence changing its electronic properties). Because the same happens also when we immerse a material in a strong and uniform magnetic field than we can actually study the electronic properties of that material at magnetic fields levels that we can't reach yet.

Extremely interesting phenomena for researching Graphene properties, but no real Magnetic Field is generated.
A society of dogmas is a dead society.

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby DeltaV » Sat Dec 12, 2015 9:24 pm


D Tibbets
Posts: 2775
Joined: Thu Jun 26, 2008 6:52 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby D Tibbets » Sun Dec 13, 2015 5:14 am

I don't know what thus means. Is this the B fie3ld inside the material or outside in free space (~equivalent to air to various levels of vacuum)? Inside a material the B fields may be as much (or more?) than a thousand times higher. The B field within the high permeability core of a transformer may be hundreds of Tesla or more, while the B field nearby in free space may be a small fraction of a Tesla. It is this outside B field that is important for acting on a plasma.

The only implication that I see with a (very) superficial understanding is if these properties effect the electrical conductivity of a wire so that the wires can be smaller with resultant more amp- turns that fit within a cooled can- that generates a B field that propagates through free space. I have heard stories of graphene being a better electrical conductor than copper, perhaps by as much as 100 fold. These claims seem tentative though. If further understanding can lead to bulk production of useful high conductivity wires or ribbons without the need for cryogenic cooling/ superconducting conditions, then a 100 fold improvement may be more useful than an infinate increase with superconductors, especially with current carrying capacity considerations and other engineering issues...

Dan Tibbets
To error is human... and I'm very human.

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Sun Dec 13, 2015 5:47 am

A society of dogmas is a dead society.

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Sun Dec 13, 2015 6:10 am

A society of dogmas is a dead society.

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby DeltaV » Sun Dec 13, 2015 11:32 pm


Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Mon Dec 14, 2015 12:19 am

A society of dogmas is a dead society.

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby DeltaV » Mon Dec 14, 2015 4:38 pm


Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Mon Dec 14, 2015 5:36 pm

A society of dogmas is a dead society.

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby DeltaV » Tue Dec 15, 2015 8:30 pm


Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Wed Dec 16, 2015 9:40 am

A society of dogmas is a dead society.

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby DeltaV » Wed Dec 16, 2015 9:01 pm


Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby Giorgio » Thu Dec 17, 2015 6:48 pm

A society of dogmas is a dead society.

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: 200 tesla (localized) by stretching graphene

Postby DeltaV » Mon Dec 21, 2015 4:02 am



[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Return to “News”

Who is online

Users browsing this forum: MSN [Bot] and 2 guests